adovecot -n
# 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.21 (92477967)
# OS: Linux 4.15.0-43-generic x86_64 Ubuntu 18.04.1 LTS ext4
auth_debug_passwords = yes
auth_mechanisms = plain cram-md5
auth_verbose = yes
info_log_path = /var/log/dovecot.info
log_path = /var/log/dovecot.log
mail_location = maildir:/home/vmail/%d/%n
namespace {
  inbox = yes
  location = 
  prefix = INBOX.
  separator = .
}
namespace inbox {
  location = 
  mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Junk {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix = 
}
passdb {
  args = /etc/dovecot/passwd
  driver = passwd-file
}
protocols = imap
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
}
service imap-login {
  chroot = login
  executable = /usr/lib/dovecot/imap-login
  user = dovecot
}
service pop3-login {
  chroot = login
  executable = /usr/lib/dovecot/pop3-login
  user = dovecot
}
ssl_cert = </etc/ssl/certs/ssl-cert-snakeoil.pem
ssl_key =  # hidden, use -P to show it
userdb {
  driver = prefetch
}
userdb {
  args = /etc/dovecot/users
  driver = passwd-file
}
protocol imap {
  mail_max_userip_connections = 40
}
llist@llmail:~$